Ive just been down to Custom In Ear Monitors here in the UK. Ive tried out 64 Audio, JH audio and Ultimate Ears IEMs, with a budget of £800. In the end I went with the Jerry Harvey Audio JH11Pros.
My requirement with IEMs ranges from small wedding venues in bands with no IEMs, to Touring acts with IEM only stage monitoring. Ive gone with a Zoom H6 as a monitor mixer, as it has limiters and ambient mics built in, should they be necessary.
Its been quite a journey...